package com.example.mylibrary.utils;

import android.content.Context;
import android.view.MotionEvent;
import android.widget.Toast;

public class DisplayUtil {
    /**
     * px转dip或dp
     *
     * @param context
     * @param pxValue
     * @return
     */
    public static int px2dip(Context context, float pxValue) {
        float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }

    /**
     * dip或dp转px
     *
     * @param context
     * @param dipValue
     * @return
     */
    public static int dip2px(Context context, float dipValue) {
        float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dipValue * scale + 0.5f);
    }

    /**
     * px转sp
     *
     * @param context
     * @param pxValue
     * @return
     */
    public static int px2sp(Context context, float pxValue) {
        float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (pxValue / fontScale + 0.5f);
    }

    /**
     * sp转px
     *
     * @param context
     * @param spValue
     * @return
     */
    public static int sp2px(Context context, float spValue) {
        float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (spValue * fontScale + 0.5);
    }

    /**
     *
     * @param context 当前容器
     * @param message 弹出的消息提醒
     */
    public static void displayToast(Context context, String message){
        Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
    }

    /**
     * 计算两指距离
     * @param event 事件
     * @return 距离
     */
    public static float getDistance(MotionEvent event){
        float x=event.getX(0)-event.getX(1);
        float y=event.getY(0)-event.getY(1);
        return (float) Math.sqrt(x*x+y*y);
    }
}
